292 NEUROPTERA. 
de Ixtla (coll. Deam: 1 6), Tepetlapa [1 3], Savana Grande [3 g] and La Venta 
[1 °] in Guerrero (H. H. Smith), Acapulco (A. Agassiz! *), Tehuantepec (coll. Deam : 
1 3,1 2) and Isthmus (Sumichrast }?), Teapa in Tabasco (H. H. Smith: 5 3,4 2); 
GuatemaLa (Van Patten1?), Los Amates [2 ¢, 2 2], Gualan [5 g, 22], Zacapa 
[4 ¢,1 9], El Rancho [3 3,3 2] (Williamson, Deam, Hine, colls. Wilmsn., O. 8. U.) 
(Maxon & Hay, U. 8. N. M.: 2 3); Honpuras, San Pedro Sula (coll. McLachlan ex 
coll. Fruhstorfer: 1 3); Panama, Colon (Howland, coll. Needham: 1 ¢ ).—VENE- 
ZUELA (U.S. NW. M.: 1 2). 
Taken in January (Guatemala), February (id., Teapa), March (Teapa), April (El 
Rancho), July (Guadalajara, P. de Ixtla, Colon), September (La Venta), October 
(Tepic, Tepetlapa, Savana Grande), and December (Papachal, Tehuantepec). 
Sexual differences in venation are not so strongly marked in this as in some other 
species of Macrothemis. 
PALTOTHEMIS. 
Paltothemis, Karsch, Berl. ent. Zeitschr. xxxiii. p. 862 (1890); Calvert, Proc. Bost. Soc. Nat. 
Hist. xxviii. pp. 801, 303, 305, 312 (1898). 
The only known species is :— 
1. Paltothemis lineatipes. 
Paltothemis lineatipes, Karsch, |. c. p. 8363 (1890)’; Calvert, Proc. Bost. Soc. Nat. Hist. xxviii. 
p. 312, t. 1. figg. 1, 8, 9 (details $) (1898)?; Proc. Calif. Acad. Sci. (3), Zool. i. p. 409 
(1899)°; Needham, Proc. U.S. Nat. Mus. xxvii. p. 699, t. 39. fig. 4 (nymph) (1904) “; Baker, 
Invert. Pacif. i. p. 87 (1905) °. 
Dythemis russata, Calvert, Proc. Calif. Acad. Sci. (2) iv. p. 526, t. 16. figg. 46-49 (details d 9) 
(1895) °. 
dg. The colouring of the bases of the wings reminds one of that of the same sex of certain forms of Libellula 
saturata, and, as in that species, decreases in extent from north to south. Most of the present examples 
from the United States, Lower California, and Santa Ana have the fulvous or ochraceous tint reaching 
outward “ for the entire width, on the front wing half- or two-thirds-way to the nodus, three-fourths- 
way or all the way to the nodus on hind wings” *. Of all of these, those from Sierra Laguna are most 
deeply and extensively coloured; others (Sierra San Lazaro, Box Canyon) are more moderate in depth 
and area of hue. The specimens from Guatemala and Costa Rica are more like the Brazilian type, 
having “die Subkosta und der Medianraum [to, and usually not] bis tiber die cellula cardinalis hinaus 
intensiv gelb ”!, with little or no colouring posterior to the postcostal vein. Unlike Z. saturata, no 
venational features appear to be associated with the colour-gradations. There is but one submedian 
eross-vein, and the number of rows of cells between the short sector and the supplementary sector next 
below on the hind wing varies from one to two, even in the extensively coloured examples from the same 
locality (Carr Canyon, in August). 
9. In view of what has just been said concerning the males, it is remarkable that two Costa Rican females 
(one each from Carrillo and the road to La Palma) should present the maximum of wing-colouring. In 
these two the ochraceous tint extends outward from the base, in the subcostal and submedian spaces of 
the hind wings, to the second antecubital and almost to the triangle, and is continued for a short distance 
beyond these by pale yellow; on the front wings a paler colour exists in these spaces. 
Dimensions.—Abdomen, ¢ 29-33, 9 28-32; hind wing, ¢ 38°5-45, 9 40-45 mm. 
